Stoker



Nov. 3, 1925- J. A. CAREY STOKER 2 Sheets-Sheet l Filed June 28, 1921 um/( cm 3513 abtomezz l m 600 4 1 W Nov. 3, 1925. "11560204 'J. A. CAREY STOKEH Filed June 28, 1921. 2 Sheets-Sheet 2 CL Cam v 5 3513A Glam/W v I is fully describedin copend-ing 'appli'ca Patented Nov. 3, 1925.

UNITED STATES JAMES A. CAREY, OF NEW YORK, N. Y.,

INCORPORATED, OF NEW YORK,

PATENT OFFICE.

STOKER.

Application filed June 28, 1921. Serial No. 480,985.

To all whom it may concern:

Be it known that I, JAMES A. CAREY, a citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and useful Improvements in Stokers, of which the following is a full, clear, and exact description.

This invention relates to improvements in stokers, and more particularly to improvements in the stoker shown in the patents to Williams Nos. 1,118,985 and 1,099,- 956 and in my copending application Serial No. 335,100. In my copending application I have improved the Williams stoker by the elimination of gearing and connecting sh'afting to drive the conveyor elements of the stoker. Drive to these elements is attained through a worm wheel and worm gear mounted upon a shaft extending to an engine. wheel runs at comparatively high s eed.

The present invention has for its object the provision of a drive the driving engine to be of the low speed type and to be so mounted as to drive the driving gear of the conveyor through the medium of a single idler gear, thereby eliminating shafting and extra gearing.

A further object resides in the provision of a drive of such character that a compact arrangement of engine and conveyor is secured. mounted upon the same supporting structure.

Further objects and advantages will be pointed out in more detail in the accompanying specification and claims and shown inihe drawings, in which Fig. 1 shows a substantially central section of the stoker- With certain parts in outside-elevational view to show the driving connection. I r

Fig. 2 shows" a cross sectional view through main conveyor driving gear and shows aside elevation ofthe driving engine and associated parts.

, "Figuashowsja-to view of certain detailsofthedriv ng connect ons 1 Fig: iishow s a detail view. of the ing for the-intermediate gear.

mount- The stokerwhich "s illustrated iii-Figri which will permit I Preferably both units may be tion heretofore referred to. Reference may be had to this application for an understanding of the details of construction.

It is here sufficient to state that the vertical conveyor screw 7 receives its drive through bevel gears 8 from a horizontal worm wheel teeth thereon as in my prior construction.

E represents the driving engine. This may be of any desired type, but, for economy and reliability in operation andefliciencyin upkeep, I prefer to utilize a slow speed reciprocating steam engine having a plurality of cylinders and with their pistons driving a crank shaft by means of the connecting rods 16. These rods co-operate with suitable crank pins on crank discs 17, and intermediate the discs and driven in unison therewith upon their rotation'is a spur gear 18. This gear on the engine crank shaft will hereinafter be referred to as an engine gear. i

The engine E is provided with a crank case 19-20 split longitudinally, as shown in Fig. 2, and the entire engine assembly or unit is fastened to a sub-base is attached in any suitable manner to the base 15.

Preferably attached to thelower half of the crank case is a pair of, arms 22 (see Figs. 1 and 4). These arms, form a bracket to suitably support a pin23 which carries a spur gear 24 hereafter'called .an inter crank case and housing 13 are suitably part of the screw. This gear, as,

21 which he gear having. I

apertured'to permit the entryjof 'gear 24' into meshing relation with'thefengine geari and the conveyor; drive gear.

The arrangement, described 'providesan' exceedingly compact'dispo'sition'of the parts and minimizes the number of parts whic'h' require lubrication and care. Furthermore,

therefor, a support for the engine and speed reducing gearing may be removed as a unit for repair or substitution of a new unit.

What I claim is n 1. In a conveyor for stokers, in combination, a conveyor screw, a assaged structure said passaged structure, a spur gear mounted in a section of said passaged structure and connected to said conveyor screw for driving the same, a driving engine having a driving gear tram mounted thereon and forming therewith a' unitary driving element, said gear train 1nincombinaa horizontal conveyor screw, a lifting conveyor screw driven from said horizontal screw, passaged structures for said conveyor screws, supports for said passaged structures, a spur gear connected to the horizontal conveyor screw intermediate its ends, forming a section of the horizontal passaged structure and forming also a bearing sup ort for the conveyor screw, a driving engine having a driving gear train mounted thereon' and forming therewitha unitary driving element, said gear train including a gear on the engine crank shaft and a spur gear meshing in driving relation with said screw spur gear, a casing for said engine and gear train, and a support for said unitary driving element carried by the support for one of said passaged structures, said unitary driving element being removable from said support and replaceable thereon as a unit fro and to driving relation respectively wit said screw spur gear.

3. In a conveyor for stokers,.in combinal tion, a conveyor screw, a passaged structure therefor, a support for said passaged structure, a spur gear mounted in a section of the passaged structure and connected to said a driv conveyor screw for driving the same, ing engine having a driving gear train mounted thereon and forming therewith a unitary driving element, acasing for said engine and gear train, supporting arms carried by said engine casing, said gear train including a gear on the engine cgank shaft and an intermediate spur gear rotatably porting arms and in., er--v said crank shaft gear carried by said su manentv mesh wit and in driving relation with said screw spur gear when the driving engine'is mounted in operating position, and a supportfor said I replaceable passaged structure support, said driving element being removable from its support and replaceable thereon as a unit from and to drlving relation respectively with said screw spur gear. 4. In a conveyor for stokers, in combination, a horizontal conveyor screw, a liftin conveyor screw driven from said horizonta screw, a passaged structure for said conveyor screw, supports for said passaged structures, a spur gear connected to the horizontal conveyor screw intermediate its ends, forming a section of the horizontal passaged structure and forming also a bearing support for the conveyor screw, a driving engine having a driving gear thereon and forming therewith a unitary driving element, a casing for said engine and gear train, supporting arms carried by said engine casing, said gear train including a gear on the engine crank shaft and an intermediate spur gear rotatably carried by said supporting arms and in permanent mesh with said crank shaft gear and in driving relation with said screw spur gear when .the driving engine is mounted in operating position, a support for said unitary driving element attached to one of said passaged structure supports, said unitary driving ele ment being removable from its support and thereon as a unit from and to driving relation respectively with said screw spur gear. a

5. The combination with a locomotive and tender, a conveyor adapted to carry coal from the tender to the locomotive fire box, comprising a horizontal screw and a lifting screw driven from said horizontal screw, a passaged structure for said screws, a sup- ,porton said locomotive for the forward portion of said passaged structure and means train mounted 1 for driving said screws comprising a spur ing screw driven from said horizontal screw,

a passaged structure for said screws extending beneath the deck of said locomotive, a support on said locomotive for the forward portion of said passaged structure a and means for driving said screws comprising a spur gear connected to the horizontal conveyor screw intermediate itsendfii forming a driving train asection of the passaged structure-and formengine carried by said casing and a gear. ing a bearing support for the conveyor train connected to the crank shaft of said screw and a unitary removable accessible engine and mounted on said casing in the 10 driving element for said gear carried by plane of said spur gear.

8 said support beneath the cab deck at one In testimony vwhereof I hereto aflix my side of said passaged structure, said e1e-1 signature.

ment comprising a casing, a reciprocating v JAMES A CAREY. 

